CN207732028U - The encapsulation end socket and packaging system of battery core - Google Patents
The encapsulation end socket and packaging system of battery core Download PDFInfo
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- CN207732028U CN207732028U CN201721742895.1U CN201721742895U CN207732028U CN 207732028 U CN207732028 U CN 207732028U CN 201721742895 U CN201721742895 U CN 201721742895U CN 207732028 U CN207732028 U CN 207732028U
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- groove
- angle
- end socket
- encapsulation
- battery core
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
This application discloses the encapsulation end sockets and packaging system of a kind of battery core, which is characterized in that including the first end socket and the second end socket, there is the first end socket the first surface towards the second end socket, the second end socket to have the second surface opposite with first surface；First surface has the first groove, and side wall and the first surface of the first groove form the first angle, and the bottom surface of the first groove is less than the opening of the first groove；The bottom surface of first groove has the second groove, the second angle of bottom surface formation of the side wall of the second groove and the first groove, and the bottom surface of the second groove is less than the opening of the second groove.The problems such as stress uneven heating of closedtop process, closedtop imperfect bonding, leakage can be improved, improve the reliability of encapsulation process.
Description
Technical field
This application involves lithium ion battery manufacturing field more particularly to a kind of encapsulation end socket of battery core and the encapsulation of battery core
Device.
Background technology
At present, lithium ion battery has many advantages, such as high-energy density, long circulation life, high performance price ratio, is answered extensively
For in various digital products, electric garden tool, energy-storage system even automobile dynamic system.
Due to the aluminum-plastic composite membrane self character as packaging material, the package reliability of soft bag lithium ionic cell always by
To everybody attention.The soft bag lithium ionic cell for especially applying to energy-storage system has more the long-term reliability of encapsulation
Harsh requirement.Therefore, packaging process is the critical process during lithium ion battery is manufactured, especially closedtop process,
It is most important to the safety and reliability of battery.
Fig. 1 is the end enclosure structure schematic diagram of existing Soft Roll lithium-ion electric core, including upper cover 11 and low head 12, upper envelope
First 11 and low head 12 material be the copper-iron alloy material with certain thermal conductivity.Upper cover 11 includes 13 He of the first groove
Second groove 14, low head 12 include third groove 15, the 4th groove 16 and the 5th groove 17, third groove 15 and the 4th groove
16 are set to the 5th groove 17.There are limited step 18 and limited step 19 respectively at left and right sides of low head.First groove 13, second
There are right angle step in groove 14, third groove 15,16 both sides of the 4th groove.
But existing closedtop head design is there is bad, easy-to-leak liquid is encapsulated, and existing head design is to encapsulation
The influence of reliability includes mainly：First, it is inadequate to be easy to be heated when the fluid sealant encapsulation of lug side, temperature ladder is formed with periphery
Degree, the meltbility of fluid sealant is bad, be easy to cause leakage；Second is that when closedtop at end socket right angle step aluminum plastic film and fluid sealant it
Intermolecular forces are uneven, and it is bad to be easy to cause encapsulation；Third, the excessive glue problem of closedtop procedure seals glue.
A kind of existing end enclosure structure is that a right angle step is arranged again in fluid sealant side edge, can slightly be improved in this way
The excessive glue problem of fluid sealant.However, not can effectively improve leakage and encapsulate bad problem.
Utility model content
For problem present in the relevant technologies, the application proposes a kind of encapsulation end socket of battery core and the encapsulation dress of battery core
The problems such as setting, capable of improving the stress uneven heating of closedtop process, closedtop imperfect bonding, leakage, improves the reliable of encapsulation process
Property.
What the technical solution of the application was realized in：
According to the one side of the application, a kind of encapsulation end socket of battery core is provided, including：First end socket and the second envelope
There is the first surface towards the second end socket, the second end socket to have the second surface opposite with first surface for head, the first end socket；The
One surface has the first groove, and side wall and the first surface of the first groove form the first angle, and the bottom surface of the first groove is small
In the opening of the first groove；The bottom surface of first groove has the second groove, the bottom surface shape of the side wall of the second groove and the first groove
At the second angle, and the bottom surface of the second groove is less than the opening of the second groove.
According to an embodiment of the present application, the first angle is equal with the angle of the second angle.
According to an embodiment of the present application, the angle of the first angle and the angle of the second angle are all in the range of 2 ° to 8 °.
According to an embodiment of the present application, the bottom surface of the distance of the bottom surface of first surface and the first groove and the first groove and the
The distance of the bottom surface of two grooves is equal.
According to an embodiment of the present application, the second groove has the central axes with the plane perpendicular of the second groove, the second groove
It is about central axes symmetrical structure, and the first groove is about central axes symmetrical structure.
According to an embodiment of the present application, second surface has third groove, and side wall and the second surface of third groove are formed
Third angle, and the bottom surface of third groove is less than the opening of third groove；The bottom surface of third groove have the 4th groove, the 4th
The side wall of groove forms the 4th angle with the bottom surface of third groove, and the bottom surface of the 4th groove is less than the opening of the 4th groove.
Wherein, the opening of the first groove is opposite with the aperture position of third groove.
Wherein, the angle of the first angle, the second angle, third angle and the 4th angle is all equal.
According to an embodiment of the present application, there are two limited steps, the first groove to be located on first surface for tool on first surface
Two limited steps between；Or there are two limited steps, third groove to be located at two on second surface for tool on second surface
Between a limited step.
According to further aspect of the application, a kind of packaging system of battery core is additionally provided, the envelope of above-mentioned battery core is included
Fill end socket.
The advantageous effect of the application is：
Make encapsulation contact area bigger, the heat ratio right angle step conducted in identical packaging time is more, reduce with
The temperature gradient of periphery material improves the meltbility of fluid sealant, to reduce leakage；In addition, being designed without apparent protrusion, can make
Uniform force between aluminum plastic film and fluid sealant improves the melting homogeneity between aluminum plastic film and fluid sealant, so as to improve encapsulation
It is bad；The melt-flow space of fluid sealant when the slope step of fluid sealant side is capable of providing encapsulation improves closedtop procedure seals glue
Excessive glue problem.
Description of the drawings
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the application
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the end enclosure structure schematic diagram of existing Soft Roll lithium-ion electric core；
Fig. 2 is the end enclosure structure schematic diagram according to the battery core of the embodiment of the present application；
Fig. 3 is the enlarged structure schematic diagram at A in Fig. 2.
Specific implementation mode
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, the every other embodiment that those of ordinary skill in the art are obtained belong to the application protection
Range.
In conjunction with shown in Fig. 2 and Fig. 3, include according to the encapsulation end socket 200 of the battery core of the embodiment of the present application：First end socket 210
With the second end socket 220, there is the first end socket 210 first surface 215 towards the second end socket 220, the second end socket 220 to have and the
The opposite second surface 225 in one surface 215；First surface 215 has the first groove 212, the side wall 216 and first of the first groove
Surface 215 forms the first angle α, and the bottom surface 211 of the first groove is less than the opening of the first groove 212.The bottom of first groove
Face 211 has the second groove 214, the second angle β of the formation of bottom surface 211 of the side wall 218 of the second groove and the first groove, and the
The bottom surface 213 of two grooves is less than the opening of the second groove 214.
The encapsulation end socket of the application passes through the side wall 218 of the side wall 216 and inclined second groove of inclined first groove
Two-stage slope step structure is formed, encapsulation contact area bigger can be made compared to the design of existing right angle step, in identical envelope
The heat ratio right angle step conducted in ETL estimated time of loading is more, can improve the temperature of the fluid sealant temperature weak spot of lug side, subtract
The small temperature gradient with periphery material improves the meltbility of fluid sealant, to reduce leakage situation；In addition, the encapsulation of the application
End socket is designed compared to existing right angle step without apparent protrusion, can make the uniform force between aluminum plastic film and fluid sealant, is improved
Melting homogeneity between aluminum plastic film and fluid sealant, it is bad so as to improve encapsulating；The slope step of fluid sealant side is capable of providing envelope
The melt-flow space of fluid sealant when dress improves the excessive glue problem of closedtop procedure seals glue.
Wherein, the first end socket 210 is upper cover, and the second end socket 220 is low head.In some embodiments, the first end socket
210 can be low head, and the second end socket 220 can be upper cover.First end socket 210 and the second end socket in some embodiments
220 material is the copper-iron alloy material with certain thermal conductivity.
In one embodiment, the first angle α is equal with the angle of the second angle β.In one embodiment, the first angle
α can not also be equal with the angle of the second angle β.
In one embodiment, the angle of the first angle α and the angle of the second angle β are all in the range of 2 ° to 8 °.
In one embodiment, the bottom surface of the distance and the first groove of the bottom surface 211 of first surface 215 and the first groove
211 and second groove bottom surface 213 distance it is equal.In one embodiment, the bottom surface of first surface 215 and the first groove
211 distance can be unequal at a distance from the bottom surface of the first groove 211 and the bottom surface of the second groove 213.
Shown in Fig. 2 and Fig. 3, according to an embodiment of the present application, the second groove 214 has the bottom with the second groove
The vertical central axes (not shown) in face 213, the second groove 214 are about central axes symmetrical structure, and the first groove 212 is
About central axes symmetrical structure.That is, two opposing sidewalls of the first groove 212 are formed with first surface 215 respectively
Two opposing sidewalls of first angle α, δ, the second groove 214 form second angle β, γ with the bottom surface of the first groove 211 respectively,
All there is two-stage slope step in the structure both sides formed by the first groove 212 and the second groove 214.
In conjunction with shown in Fig. 2 and Fig. 3, second surface 225 has third groove 222, the side wall 226 and the second table of third groove
Face 225 forms third angle ε, and the bottom surface of third groove is less than the opening of third groove 222；The bottom surface 221 of third groove
With the 4th groove 224, the side wall 228 of the 4th groove forms the 4th angle δ with the bottom surface 221 of third groove, and the 4th is recessed
The bottom surface 223 of slot is less than the opening of the 4th groove 224.Wherein, similar with the first groove and the second groove, third groove 222
Two opposing sidewalls can respectively with second surface 225 formed third angle ε, ζ, two opposing sidewalls of the 4th groove 224 can
The 4th angle δ, ε is formed with the bottom surface of third groove 221 respectively, in the structure formed by third groove 222 and the 4th groove 224
Both sides all have two-stage slope step.First groove 212, the second groove 214, third groove 222 and the 4th groove 224 can make
Upper layer and lower layer aluminum plastic film, lug and lug fluid sealant are suitably pressurized and have certain heat fusion.The slope step of fluid sealant side
The melt-flow space of fluid sealant when α, γ, δ, ζ are capable of providing encapsulation improves the excessive glue problem of closedtop procedure seals glue.
Fig. 2 shows encapsulation end socket 200 further include structure B, structure B and the first groove 212, the second groove 214, third
Groove 222 is similar with the structure that the 4th groove 224 is formed, and details are not described herein.It should be appreciated that the first groove 212, the second groove
214, the quantity for the structure that third groove 222 and the 4th groove 224 are formed can be depending on the needs of practical application.
It recombines shown in Fig. 2 and Fig. 3, in one embodiment, opening and the third groove 222 of the first groove 212
Aperture position is opposite.
In one embodiment, the angle of the first angle α, the second angle β, third angle ε and the 4th angle δ are all equal.
In one embodiment, the angle of the first angle α, the second angle β, third angle ε and the 4th angle δ are all in 2 ° to 8 ° of range
It is interior.
Wherein, first surface 215 can be in the range of 0.10mm to 0.25mm at a distance from the bottom surface of the second groove 213
Interior, second surface 225 can be in the range of 0.10mm to 0.25mm, in setting at a distance from the bottom surface 223 of the 4th groove
Need the overall thickness and material properties of consideration aluminum plastic film, lug and lug fluid sealant, the bottom surface of first surface 215 and the second groove
213 distance and second surface 225 may generally be the 30%~45% of overall thickness at a distance from the bottom surface 223 of the 4th groove.
The width of first groove 212 and third groove 222 will consider the width of lug and lug fluid sealant, can be wider than lug fluid sealant
0.5mm to 2mm.223 width of bottom surface of second groove 4 and the 4th groove can be wider 0.2mm than lug to 0.8mm.
According to an embodiment of the present application, there are two limited steps 229, the first groove 212 to be located at two for tool on first surface 215
Between a limited step 229；Or can have on second surface 225 there are two limited step 229, third groove 222 is located at two
Between limited step 229.Two limited steps 229 can be 0.1mm to 0.2mm relative to the height of first surface 215, pass through
Two limited steps 229, which are arranged, can make upper layer and lower layer aluminum plastic film suitably be pressurized and have certain heat fusion.In setting two
When the height of 229 phase of limited step, the overall thickness and material properties that consider two layers of aluminum plastic film, two 229 phases of limited step are needed
Height may generally be the 70%~90% of overall thickness, the distance between two limited steps 229 can be wider than closedtop edge lengths
3mm to 5mm.
According to further aspect of the application, a kind of packaging system of battery core, including any one above-mentioned are additionally provided
Encapsulate end socket.
In conclusion by means of the above-mentioned technical proposal of the application, the advantageous effect of the application includes：It is straight compared to existing
Angle step design can make encapsulation contact area bigger, and the heat ratio right angle step conducted in identical packaging time is more,
The temperature of the fluid sealant temperature weak spot of lug side can be improved, the temperature gradient with periphery material is reduced, improves fluid sealant
Meltbility, to reduce leakage situation；In addition, the encapsulation end socket of the application is set compared to existing right angle step without apparent protrusion
Meter can make the uniform force between aluminum plastic film and fluid sealant, improve the melting homogeneity between aluminum plastic film and fluid sealant, to
It is bad to improve encapsulation；The melt-flow space of fluid sealant when the slope step of fluid sealant side is capable of providing encapsulation improves closedtop mistake
The excessive glue problem of journey fluid sealant.
The foregoing is merely the preferred embodiments of the application, not limiting the application, all essences in the application
With within principle, any modification, equivalent replacement, improvement and so on should be included within the protection domain of the application god.
Claims (10)
1. a kind of encapsulation end socket of battery core, which is characterized in that including the first end socket and the second end socket, first end socket has court
To the first surface of second end socket, second end socket has the second surface opposite with the first surface；
The first surface has the first groove, and the side wall of the first groove and the first surface form the first angle, and the
The bottom surface of one groove is less than the opening of the first groove；
There is the second groove, the side wall of the second groove and the bottom surface of first groove to form second for the bottom surface of first groove
Angle, and the bottom surface of the second groove is less than the opening of the second groove.
2. the encapsulation end socket of battery core according to claim 1, which is characterized in that first angle and second angle
Angle it is equal.
3. the encapsulation end socket of battery core according to claim 1, which is characterized in that the angle of the first angle and the second angle
Angle is all in the range of 2 ° to 8 °.
4. the encapsulation end socket of battery core according to claim 1, which is characterized in that the first surface and first groove
Bottom surface distance it is equal at a distance from the bottom surface of first groove and the bottom surface of second groove.
5. the encapsulation end socket of battery core according to claim 1, which is characterized in that second groove has and described second
The central axes of the plane perpendicular of groove, second groove be about the central axes symmetrical structure, and it is described first recessed
Slot is about the central axes symmetrical structure.
6. the encapsulation end socket of battery core according to claim 1, which is characterized in that the second surface has third groove,
The side wall of third groove forms third angle with the second surface, and the bottom surface of third groove is less than opening for third groove
Mouthful；
There is the 4th groove, the side wall of the 4th groove and the bottom surface of the third groove to form the 4th for the bottom surface of the third groove
Angle, and the bottom surface of the 4th groove is less than the opening of the 4th groove.
7. the encapsulation end socket of battery core according to claim 6, which is characterized in that the opening of first groove and described the
The aperture position of three grooves is opposite.
8. the encapsulation end socket of battery core according to claim 6, which is characterized in that first angle, the second angle, third
The angle of angle and the 4th angle is all equal.
9. the encapsulation end socket of battery core according to claim 6, which is characterized in that
Tool is there are two limited step on the first surface, first groove be located at two limited steps on first surface it
Between；Or
Tool is there are two limited step on the second surface, the third groove be located at two limited steps on second surface it
Between.
10. a kind of packaging system of battery core, it is characterised in that：It include the encapsulation such as claim 1-9 any one of them battery cores
End socket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721742895.1U CN207732028U (en) | 2017-12-14 | 2017-12-14 | The encapsulation end socket and packaging system of battery core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721742895.1U CN207732028U (en) | 2017-12-14 | 2017-12-14 | The encapsulation end socket and packaging system of battery core |
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| Publication Number | Publication Date |
|---|---|
| CN207732028U true CN207732028U (en) | 2018-08-14 |
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ID=63098477
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721742895.1U Active CN207732028U (en) | 2017-12-14 | 2017-12-14 | The encapsulation end socket and packaging system of battery core |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111225499A (en) * | 2018-11-27 | 2020-06-02 | 庆鼎精密电子（淮安）有限公司 | Local mixed-voltage circuit board structure and manufacturing method thereof |
-
2017
- 2017-12-14 CN CN201721742895.1U patent/CN207732028U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111225499A (en) * | 2018-11-27 | 2020-06-02 | 庆鼎精密电子（淮安）有限公司 | Local mixed-voltage circuit board structure and manufacturing method thereof |
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